Feed-table for sheet-rolls.



Patented Mar. ll, I902.

F. 0. STROMBORG'.

FEED TABLE FUR SHEET ROLLS.

(Application filed June 26 1901.)

2 Sheets-Sheet I.

(No Model.)

Inventor:

liter-11998:

THE mums pmns ca, mofmuma, wAsmumoN, o, c.

No. 695,249. Patented Mar. u, I902.

F. 0. smomsone.

FEED TABLE FOB SHEET BULLS.

Application filed June 26, 1901.) (No Model.) 2 Shets-Sheet 2!.

1 min eased:

l IJNTTED STATES PATENT @rrrce.

FRITZ OSCAR STROMBORG, OF PITTSBURG, PENNSYLVANIA.

FEED-Jame FOR SHEET-ROLLS.

SEPEGIFIGATION formingpart of Letters Patent No. 695,249, dated March 11, 1902.

Application filed June 26. 1901. Serial No. 66,069. (No model.)

To aZZ wh m i y e p the rolls is not only slow, so that the plate or Beitknown thatLFRITZ OSOARSTROMBORG, sheets must be frequently reheated,but it is a resident of Pittsburg, in the county of Alalso quiteexpensive by reason of the skilled 55 legheny and State of Pennsylvania,have inlabor which is necessary and the correspond vented a new anduseful Improvement in ingly high wages which mustbe paid forsuchFeed-Tables for Sheet-Rolls;'and I do hereby labor. The object of myinvention is to do declare the following to be a full, clear, and awaywith this skilled labor and also to some exact description thereof.extent reduce the number of reheatings nec- 60 My invention relates tofeeding devices for essary in reducing the sheets to the desired plateand sheet rolling-mills, and more espegage. To this end it comprisesmechanism cially to devices for feeding packs to sheetin front of therolls for feeding the plate or rolls. pack to the rolls and receivingthe same when The object of my invention is to dispense passed back tothe front of the rolls and simi- 65 with the hand labor which iscommonly emlar mechanism at the rear of the rolls for reployed forfeeding sheets and packs to the ceiving the pack or plate'as it emergesthererolls and to provide mechanism for this purfrom and for returningit to the front of the pose which Will feed a plate or pack to therolls, such mechanisms passing the pack back rolls and pass the samecontinuously back and forth through the rolls continuously and 70 andforth through the rolls in the case of a rapidly and being soconstructed that the three-high mill or in the case of a two-high sameend of the packis always entered into mill pass the same continuouslythrough the the rolls and so that the chilling of the plate rolls andback over the same, said mechanism or sheets is avoided. reversing theplate or pack, so that the same In the accompanying drawings, Figurelisa 75 end will always be entered into the rolls. side elevation,partly in section, of my inven- A further object of my invention is toso tion applied to a three-high mill. Fig. 2 isconstructthefeedingmechanismas toprevent a plan view of the same. Fig. 3is an end the too-rapid chilling of the plate or pack. view thereof; andFigs; 4: and 5 are side ele- Accordingto the common method ofrollingvations, partly in section, of the invention 80 sheet metal thesheet-bar is broken down applied to a two-high mill, said figures showinroughing-rolls and a number of these ing the feeding mechanisms indifferent poroughed-down sheets are then piled and given sitions.several passes in the hot rolls untilreduced In the drawings the bottomrollof the sheetto such a gage that further reduction is immill is shownat l, the top roll at 2, and, in 85 possible on account of the spring inthe rolls. case of three-high mill, the middle roll at 3,

These piles are then folded and then reheatthese rolls being of theusual construction ed, if necessary, and given further passes andmounted and driven in the usual Way. through the hot rolls, and if thennot reduced In front of the rolls is located the feeding to the desiredgage are further folded and mechanism 4 and atthe rear the feeding 90again rolled as before. This process is in mechanism 5, these mechanismsbeing exact every-day use and is Well understood by those duplicates ofeach other, so that a description skilled in the art. In all of theserolling steps of one will suffice for the description of both, that is,whether roughing down or rolling and I will first describe the same asadapted in packs in the hot rollsthe plate or pack for the three-highmill. 95 is entered into the rolls by one Workman and Each of thefeeding mechanisms for the is received at the rear of the rolls by thethree-high mill comprises three series of rollcatcher, who returns thesame over the rolls ers 6, '7, and 8, arranged one above the other, tothe roller, who again enters the same into each series being shown ascomposed of four the rolls, the plate or. pack being thus passedrollers; but the number of rollers in each se- 160 through the rolls andback over the rolls ries will be varied according to the length of untilreduced to the desired gage or until furthe plates or pack to be rolled.These rollers ther folding or reheating becomes necessary. are allmounted in a suitable frame 9, which, This method of feeding the plateor pack to as well as the rollers themselves, are prefermutilate thepacks.

ably constructed as light as possible, so as to require little power toreverse the same end for end in the manner which will hereinafter bedescribed. The details of the construction of this frame may vary withinvery wide limits. As illustrative of one manner of constructing theframe I have shown the middle series of rollers 7 mounted in a casting10, provided With top and bottom flanges, to which are riveted or boltedthe flanges of the channels 11. On the outer edges of each of thesechannels 11 are secured suitable brackets or housings 12 for receivingthe journal-boxes 13 of the upper and lower series of rollers 6 and 8.The housings 12 are slotted, so that the rollers of each of these seriescan move toward and from the middle series of rollers to accommodateplates or packs of different thicknesses, as will be readily understood.To hold the outside rollers against the middle rollers, suitable means--such as the spiral springs 14, bearing on the journal-boXesare employed.To stiffen the frame 9, cross-braces, such as the angle-irons 15, may beriveted or otherwise suitably secured to the channel-pieces 11.

The frame 9 is fixedly secured at its center or middle portion to atransverse shaft 16, journaled in the standards or housings 17 andserving as trunnions around which the said frame may be rotated andreversed end for end. Suitable pits 18 are formed both in front and atthe rear of the sheet-rolls to allow for this rotation of the frames.Any suitable means may be employed for reversing the frame end forendsuch, for instance, as the gear 19 on the shaft 16, which gear isengaged by a rack 20. The rack may be actuated by any suitablemechanism-such, for instance, as the hydraulic or other power cylinder21. The feed mechanisms at both sides of the rolls should preferably,although not necessarily, be actuated in unison, so that they willalways be in line, and for that reason it is desirable to connect theracks 20 by means of a suitable tie-rod 22, and one of the cylinders 21can be used to draw the said racks in one direction and the othercylinder to draw the samein the opposite direction, thus alternatelyrotating the mechanisms 4 and 5 abouttheir trunnions first in onedirection and then in the opposite direction.

The rollers of the series 6, 7, and 8 are preferably composed of aseries of thin disks 23, spaced apart so that each of said rollers hasbut a slight contact with the plate or pack, thereby reducing thechilling effect of the same thereon, and the disks of the severalrollers in each series are arranged out of line or staggered with eachother, as shown in plan view, Fig. 2, in order not to groove orotherwise mutilate the plate or pack being passed between the same.These disks must bear on the plate or pack with sufficient firmness tofeed the same into the rolls; but this pressure should not be sufficientto groove or otherwise The spiral springs 14,

therefore, will only be made of sufficient"; strength to cause asufficient gripto feed the 1 pack. The pack or plate is heldeither between the series 6 and the middle series 7orbe-' I I have shown meansfor positively driving all of said series, said means comprising adouble sprocket-wheel 24, running loosely on the shaft 16 and adapted tobe driven from any suitable source by the sprocket-chain 25. The shaftsof each of the rollers of all three series are provided with suitablesprocketwheels 26, and an endless sprocket-chain 27 is caused to engageeach of the sprocket-wheels 26 and the driven sprocket-wheel 24, saidchain passing in the course shown and being guided by suitable guidewheels'or sheaves 28, so as to be held in contact with all of thesesprocket-wheels and to drive the'rollers'in the series 6 and 8 in onedirection and the rollers in the series 7 in the opposite direction.this way the meeting faces of the rollers in the series 6 and 7 willfeed a plate or pack in one direction-as, for instance, draw the sametherebetween, as shown at the upper pass in Fig. l-while the meetingfaces of the rollers in series 7 and S will feed a pack containedtherein in the opposite directionas, for instance, into and through thelower pass in Fig. 1. Instead of the three series-of rollers 6, 7, and 8I may use any other suitable means, such as three endless chains, theupper and IOC lower ones being driven in one direction and r the middleone driven in the opposite direction. The direction of travel of thesemeans, whether rollers or chains, is never reversed, even where theframes 9 are reversed end for end.

The operation of the mechanism so far described is as follows: Supposingthat a pack of sheets suitably heated is contained in the lower pass ofthe feed mechanism 4 in front of the rolls and a similar pack held inthe upper pass of the feed mechanism '5 at the rear of the rolls andthat the three-high rolls and the various rollers of the feed mechanismsare being positively driven. The effect is to feed the pack contained inthe lower pass of the feed mechanism at the front of the rolls, throughthe lower pass thereof,and into the lower pass of the feed mechanism atthe rear of the rolls, while the pack contained in the upper pass of thelatter mechanism is fed forward through the upper pass of the rolls intothe upper pass of the feed mechanism in the front of the rolls. As soonas both packs are clear of the reducing-rolls the racks 20 arereciprocated by means of the hydraulic cylinders 21, thereby rotatingthe gears 19 and shafts 16 and rotating the feed mechanisms 4 and 5 onsaid shafts. This reverses each of said feed mechanisms end for end, sothat the pack which has just been received in theupper pass ofthe feedmechanism 4 is now held in the lower pass of said feed mechanism andwith its forward end toward the rolls, while the pack which has justbeen received in the lower pass of the feed mechanism 5 is now held inthe upper pass of said feed mechan ism, with its forward end alsodirectedtoward the rolls. In this position, since the direction ofrotation of the rollers 6, 7, and 8 is not reversed, said packsimmediately begin to move in opposite directions and through the lowerand upper passes, respectively, of the sheet-rolls in the manner justdescribed. It will thus be seen that by means of this mechanism the saidpacks are passed continuously back and forth first through the lower andthen through the upper pass of the three-high rolls and that no matterin which direction they are being passed their forward end will alwaysbe entered into the rolls, this being necessary by reason of the factthat the rear ends of a folded pack have atendency to spring,curve,orfan apart,sotha t it is impossible to enter said rear end into therolls. The packs or sheets by the mechanism described can therefore bequickly reduced and with a minimum loss of heat, and. no skilled laborfor this is necessary, as all of the work can be done by the man whooperates the adjusting-screws for the sheet-rolls, the lever forcontrolling the hydraulic or other power cylinders being located withinconvenient reach.

In Figs. 4 and 5 thesame mechanisms have been shown applied to atwo-high mill, and the mechanisms are in all substantial particulars thesame as those just described, the

only difference being that only two series of rollers 6 and 8 areemployed and that the rollers of both of said series are shown asspring-pressed toward each other. The frame 9 for this series of rollerscomprises a single channel 11, on which the housings 12 for thejournal-boxes 13 of the rollers are mounted, said channels beingsuitably united by angleirons 15 and having secured thereto theprojections 30, which are fixed to the transverse shaft 16. These shafts16 and the mechanisms 4 and 5 are rotated by gears, racks, and hydrauliccylinders, as before described. Each of the rollers in these mechanismsis also composed of a series of disks spaced apart, as shown in Fig. 2,and the disks of the various rollers are staggered with relation to eachother, as described. Said rollers are also driven in substantially thesame manner by means of sprocket wheels and chains, the only differencebeing that the sprocketchain 27 is so arranged and guided that it willdrive the rollers in the two series in opposite directions. In the useof this modified form of my invention the operation is precisely asdescribed in relation to the three-high mill, the only difierence beingthat in order to give the pack a pass through the rolls the feedingmechanisms must be in the position shown in Fig. 4, and as soon as thepack has cleared the sheet-rolls thesaid feeding mechanisms are reversedend for end to the position shown in Fig. 5 and the pack returned to thefront of the rolls over the top thereof, no pack in the meantime beingpassed through the rolls.

It is obvious that the feed mechanisms shown in Figs. 1, 2, and 3 couldbe used with a two-high mill, and in that case the upper pass of rollersin the feed mechanisms would merely return the pack contained therein tothe front of the rolls over the top thereof, while the pack in thebottom thereof would be reduced between the rolls. It is also obviousthat the form of feed mechanism shown in Figs. 4 and 5 could be usedwith a threehigh mill; but in that case only one of the passes of saidthreehigh rolls could be utilized at the same time.

As heretofore stated, the details of construction of the mechanisms mayvary within wide limits, and I do not wish to be limited in any way tothe particular construction of frames shown, nor to the use of rollersfor feeding the packs, nor to the means shown for driving the rollers orother feeding means in said frames, nor to the mechanism shown forreversing said frames end for end. While I have shown myinvention asparticularly adapted for feeding packs to sheet-rolls, I do not wish itlimited thereto, but intend it to be applied to any work for which itisadapted.

WVhat I claim as my invention, and desire to secured by Letters Patent,is-- 1. In a device for feeding plates or packs to sheet-rolls, thecombination with the rolls, of mechanism for feeding the plate or sheetsto the rolls and mechanism for receiving the same from the rolls,andreturning them to the front of the same set of rolls, said last-namedmechanism being reversible endwise, whereby the plate or pack isreturned to the front of the rolls with its front end foremost.

2. In mechanism for feeding plates or packs to sheet-rolls, thecombination with the rolls, of endwise-reversible feeding mechanism infront of the same and endwise-reversible feeding mechanism at the rearof the same, whereby said plate or pack is fed through the rolls,reversed endwise, returned to the front of the same set of rolls, againreversed endwise and again fed to the rolls.

3. In mechanism for feeding plates or packs to sheet-rolls, thecombination with the rolls, of positively-driven feeding means in frontof the same, and positively-driven feeding means at the rear of thesame, both of said feeding means being reversible endwise in line withthe same set of rolls.

4. In mechanism for feeding plates or packs to sheet-rolls, thecombination with the rolls, of two or more series of live rollers forreceiving the plate or pack between the same, and

means whereby said series of rollers may be reversed endwise, to returnthe plate or pack to the front of the same set of rolls from which itwas received.

5. In mechanism for feeding plates orpac'ks IIO of the same, feeding andreceiving mechanism at the rear of the same, transverse trunnions onwhich each of said mechanisms are mounted, and means for rotating saidmechanisms about said trunnions. I

7. In a device for feeding plates or packs to sheet-rolls, thecombination with the rolls, of

positively-driven feeding means in front of the rolls, positively-drivenfeeding means at the rear thereof, frames in which each of said feedingmeans are mounted, said frames being mounted on transverse trunnions,and means for rotating said frames on said trunnions.

8. In a device for feeding plates or packs to sheet-rolls, thecombination with the rolls, of a series of positively-driven rollers, aframe in which the same are mounted, said frame being mounted ontransverse trunnions at the center thereof, and means for rotating saidframe on its trunnions. 1

9. In mechanism for feeding plates or packs to sheet-rolls, thecombination with the rolls, of two or more series of live rollers infront of the same, a similar arrangement of live rollers at the rear ofthe same, frames in which said series of rollers are mounted, transversetrunnions for said frames, and means for rotating said frames about saidtrunnions.

10. In mechanism for feeding plates or packs to sheet-rolls, thecombination with the rolls, of two or more positively-driven feedingmeans in different horizontal planes, a frame in which said means aremounted, means for yieldingly holding one of said means against theother, and means for reversing said frames endwise.

11. In mechanism for feeding .plates or packs to sheet-rolls, thecombination with the rolls, of two or more series of live rollers indifierent horizontal planes, a frame in which said rollers are mounted,means for holding the rollers of one series yieldingly against therollers of the other series, and means for reversing said frame endwise.

12. In mechanism for feeding plates or packs to sheet-rolls, thecombination with the rolls, of three series of rollers or the like, aframe in which the same are mounted, means for holding the rollers ofthe two outer series yieldingly against the rollers of the middleseries, and means for positively driving the rollers of the middleseries.

13. In mechanism for feeding plates or packs to sheet-rolls, thecombination with three-high rolls, of mechanism at the front thereof forreceiving a pack from one pass of said rolls and simultaneouslyfeedinganother pack to the other pass of said rolls, and a similar mechanism atthe rear of said rolls, said mechanisms being reversible endwise.

14. In mechanism for feeding plates or packs to sheet-rolls, thecombination with three-high rolls, of feed mechanisms at the front andrear thereof, said mechanisms each comprising three series of liverollers or the like in different horizontal planes, suitable frames inwhich said rollers are mounted, and means for reversing said framesendwise.

15. In mechanism for feeding plates or packs to sheet-rolls, thecombination with a series of positively-driven rollers each composed ofdisks spaced apart, the disks of said several rollers being staggeredwith relation to each other.

16. In mechanism for feeding plates or packs to sheet-rolls, thecombination of two or more series of live rollers, each of which iscomposed of disks spaced apart, and means for holding the rollers of oneseries yieldingly against the rollers of the other series.

In testimony whereof I, the said FRITZ Os- CAR STROMBORG, have hereuntoset my hand.

FRITZ OSCAR STROMBORG. Witnesses:

G. O. RAYMOND, ROBERT C. TO'ITEN.

